BARTRAMIACEAE 145 



Bartramia may be distinguished from Philonotis by 

 the long hair-like leaves becoming somewhat crisped 

 when dry; from Plagiopus, which is not common 

 and found only in limestone regions, by the larger 

 size, more robust stems, longer leaves, and larger 

 capsule. 



When Bartramia is not fruited it resembles Oncoph- 

 orus (p. 86), in general appearance, but Bartramia is 

 much more common, grows more extensively, the 

 leaves are not so decidedly curled when dry, and the 

 brown radicles found on the stems are not found on 

 the stems of Oncophorus. Bartramia may be known 

 from Dicranum, when both are sterile, by the leaves 

 equally spreading instead of more or less turning to 

 one side. See Plate V. 



34. PHILONOTIS Brid. (Phi-16-no-tis) 



A very large genus with one species generally com- 

 mon. Name derived from the Greek for '' loving " and 

 " moisture," referring to the favorite habitat of the 

 plants. 



Philonotis fontana (L.) Brid. is found on the ground 

 in swamps and wet places and on rocks where water is 

 dripping; fruit occasional. 



Plants growing close together; light yellowish- green; often 

 forming thick mats. 



Stems erect or ascending, usually 1-3 inches long, slender; 

 red; the lower part covered with brown radicles (tomen- 



